  .tree-container {
            position: absolute;
            z-index: 1000;
            background: white;
            border: 1px solid #ddd;
            width: 100%;
            max-height: 300px;
            overflow-y: auto;
            display: none;
        }
        .tree-node {
            padding-left: 20px;
            cursor: pointer;
        }
        .tree-node:hover {
            background-color: #f8f9fa;
        }
        .tree-toggle {
            cursor: pointer;
            margin-right: 5px;
        }
        .input-container {
            position: relative;
        }